Effect of N-Isopropylacrylamide on the Structure and Swelling Behavior of Microporous Polyurethane Film

Abstract:

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Preparation of membranes from stimuli-responsive polymers, copolymers, and polymer-additive mixtures is an important approach in the design of responsive membranes. N-isopropylacrylamide(NIPPAm) was dispersed in polyurethane(PU) solution, crosslinked with N,N’-methylene bisacrylamide(BIS) and then cast in bathes to get a thermosensitive microporous film. The ratio of NIPAAm with BIS amount and the cast medium were varied. The structure, surface and cross-section images of polyurethane/poly(N-isopropylacrylamide) (PU/PNIPPAm) semi- interpenetrating networks (semi-IPNs) were characterized by FT-IR and SEM. The swelling behavior of pure PU films and PU/PNIPPAm semi-IPNs were compared. The results showed that incorporation of PNIPPAm had great effect on the structure and swelling behavior of composite films. This approach enables fabrication of membranes with the desired pore structure.

Info:

Periodical:

Advanced Materials Research (Volumes 148-149)

Edited by:

Xianghua Liu, Zhengyi Jiang and Jingtao Han

Pages:

1652-1655

DOI:

10.4028/www.scientific.net/AMR.148-149.1652

Citation:

H. N. Lv et al., "Effect of N-Isopropylacrylamide on the Structure and Swelling Behavior of Microporous Polyurethane Film", Advanced Materials Research, Vols. 148-149, pp. 1652-1655, 2011

Online since:

October 2010

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Price:

$35.00

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